We look at the division of 86294686 by 574 
The aim is to understand the frequency of 574 in 86294686.

Let's proceed to step 1:
8 divided by 574 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 574

Step 2:
When dividing 86 by 574, we get 0 with a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 86 and we're left with 86.
Fetch the next digit (2) from the dividend, attach it to 86 and continue: 862 / 574

Advancing to step 3:
574 can be fit into 862 1 times, resulting in a remainder of 288.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 288 after subtracting 574 from 862.
Fetch the next digit (9) from the dividend, attach it to 288 and continue: 2889 / 574

Going ahead to step 4:
When dividing 2889 by 574, we get 5 with a remainder of 19.
The next digit of our result is 5. 
Result so far: 15.0
If we take 2870 away from 2889, we end up with 19.
Fetch the next digit (4) from the dividend, attach it to 19 and continue: 194 / 574

Let's proceed to step 5:
574 goes into 194 0 times with a remainder of 194.
Use 0 as the next digit of our solution. 
Result so far: 150.0
Subtracting 0 from 194 leaves us with 194.
Append the next digit (6) from the dividend to 194 and continue with: 1946 / 574

Moving on to step 6:
574 goes into 1946 3 times with a remainder of 224.
Use 3 as the next digit of our solution. 
Result so far: 1503.0
Subtracting 1722 from 1946 leaves us with 224.
Take the next digit (8) from the dividend and append it to 224, then repeat: 2248 / 574

Advancing to step 7:
When dividing 2248 by 574, we get 3 with a remainder of 526.
The number 3 becomes the next digit in our result. 
Result so far: 15033.0
The remainder is 526 after subtracting 1722 from 2248.
Bring next digit (6) of the dividend behind the 526 and repeat the process: 5266 / 574

Advancing to step 8:
If we divide 5266 by 574, we get 9 and a remainder of 100.
Write down 9 as next digit of the result. 
Result so far: 150339.0
If we take 5166 away from 5266, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 9:
1000 divided by 574 is 1 with a remainder of 426.
Record the quotient 1 as the next digit in the result. 
Result so far: 150339.1
If we take 574 away from 1000, we end up with 426.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4260, and continue the process.

Step 10:
4260 divided by 574 is 7 with a remainder of 242.
Record the quotient 7 as the next digit in the result. 
Result so far: 150339.17
If we take 4018 away from 4260, we end up with 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Step 11:
The number 574 fits into 2420 4 times, leaving a remainder of 124.
Record the quotient 4 as the next digit in the result. 
Result so far: 150339.174
If we take 2296 away from 2420, we end up with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Moving on to step 12:
1240 divided by 574 is 2 with a remainder of 92.
Use 2 as the next digit of our solution. 
Result so far: 150339.1742
If we take 1148 away from 1240, we end up with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

On to step 13:
574 can be fit into 920 1 times, resulting in a remainder of 346.
Write down 1 as next digit of the result. 
Result so far: 150339.17421
The remainder is 346 after subtracting 574 from 920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Advancing to step 14:
574 goes into 3460 6 times with a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 150339.174216
The remainder is 16 after subtracting 3444 from 3460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 15:
When dividing 160 by 574, we get 0 with a remainder of 160.
Put 0 as the next digit of the answer. 
Result so far: 150339.174216
If we take 0 away from 160, we end up with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Let's proceed to step 16:
The number 574 fits into 1600 2 times, leaving a remainder of 452.
Write down 2 as next digit of the result. 
Result so far: 150339.17421602
The remainder is 452 after subtracting 1148 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4520, and continue the process.

The final result is 150339.17421602 with a remainder of 4.52e-07.